. 6.17 , , . , . , . . , ADSL , . , , , . , ADSL . Ethernet, . - , , , .
. 6.17. .
ADSL:
- , , /ѕ CATV (4 /) ++ + (64 /) | |
, , (1.5 /)++ + + ( - 384 /) | |
, | , / , VHS (1.5 /), CATV (4 /), (6 /) VCR (16 /) |
(384 /) (, ,) (100 /) | |
. (6 /)+ (64/) |
, ADSL. ADSL . , : (Frequency Division Multiplexing FDM) (Echo Cancelation EC)
6.18. .